“I want my watch. That’s all,” Durning said in Manhattan Supreme Court Thursday, just minutes before she was set to finalize her split from the famous British singer.

“What an a–hole you are,” she told Waters as the judge took the bench.

The “Comfortably Numb” rocker responded by putting his hands up by his shoulders as if to say, “What did I do?”

The bickering continued with Waters’ lawyer, Robert Dobrish, snapping at Durning, “It’s your watch. Pick it up at the store.”

Durning told the judge she had tried to retrieve her gold Daytona Rolex from the repair shop, but Rolex staff refused to release it because the luxury timepiece was being held in the name of Waters’ assistant.

“When I handed his personal stuff back to him, he should have handed me the watch,” Durning insisted.

Justice Lori Sattler ordered the parties to sign a second agreement, in addition to their divorce settlement, stating that the watch belonged to Durning.

Roger Waters and Laurie DurningGetty Images

Waters, 72, married Durning, 52, in a secret ceremony in 2012 after they had lived together for 10 years.

Waters briefly testified, saying his relationship with Durning “broke down irretrievably” for a period of at least six months before he filed for divorce in October.

The couple had a prenup that was described as “generous” to Durning, according to a source. The details are confidential, but Waters is worth a reported $185 million.

Asked whether she was happy about the payout in the prenup, Durning admitted, “Yes, I didn’t fight it.”

During the separation, Waters lived in the couple’s 7,000-square-foot East 61st Street townhouse while Durning, a filmmaker, stayed in their $16.2 million Bridgehampton mansion.

Judge Sattler said about the couple’s quick split, “I wish I could hold you up as an example for other cases of mine.”

“It’s wonderful that you resolved this so quickly,” she added.

But Durning, looking chic in a slim-fitting grey pantsuit and black heels, told The Post that the divorce “wasn’t amicable.”

Her attorney, Peter Bronstein, said, “Laurie is pleased to have this behind her.”

The aging rocker, who came to court in jeans and a suede jacket, said, “No comment. Thank you.”

Waters left the band in 1985 but has been performing Pink Floyd classics like “Dark Side of the Moon” on solo tours.